Pick.



Patented Apr. 22, I902. E. A. SMITH. v

PICK.

(Application filed Aug. 16, 1900.)

(No Model.)

NrrED STATES PATENT OF IOE.

EDWARD AL. sMITI-I, 0F FOWLER, COLORADO, ASSIGNQR T0 rfw. nAsr-r AND E. M. SPRAGUE, OF DENVER, COLORADO.

PICK.

SPECIFICATION forming part of Letters Patent No. 698,147, dated April 22, 19 02.

' Application filed August 16,1900. seriniti. 27,093. (Nomodeld To all whom' it may concern:

Be it known that I, EDWARD AL. SM1TR, a citizen of the United States, residing at Fowler, in the county of Otero and State of 0010- rado, have invented certain new and useful Improvements in Picks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to picks, and more particularly to picks designed for use by miners.

The object of the invention is to provide a pick which shall be of such construction as to permit of its points being removed fromthe handle when they becomeworn in order' to replace them with new points or when it is desired to change the style of the point 'for some particular class of work.

A further object is to provide simple, du-' rable, and positive means for locking the" points in position; and the final object is. to provide a pick of this character which shall be simple of construction, durable in use,

and comparatively inexpensive of production.

In the accompanying drawings, Figure 1-isv a side elevation of my improved pick, the handle being broken away in order to show the parts on an enlarged scale. Fig. 2 is{a longitudinal vertical sectional view, and Fig.

3 is a detail perspective view of the locking wedge. A e v In the drawings, 1 denotes the pick-handle, and 2 theeye of the pick, which is connected to the handle in any well-known or desired manner and is provided with a polygonal, preferably rectangular, end.

3 denotesthe pick-points, each of which has at its inner end a shank 4, provided with a transverse groove 5, adapted to take a transverse rib 6, formed on the end wallofthe polygonalopenirig. 1

When the pick-points with their shanks are inserted in thepolygonal opening, hav-" ing their transverse grooves engaged by the transverse ribs formed on the end 'wallsof said opening, there is left a space between the adjacent sides of the shanks, and into opening at its upper this space I drive a lock in the shape of a 1 wedge, which forces .the shanks outwardly against the' end walls of the polygonal opening. It will therefore be impossible for the points to become accidentally disengaged, for until the wedge is removed the transverse grooves inthe shanks are interlocked with the transverse ribs of the polygonal opening.

The wedge is preferably formed with a lug or extension to facilitate its removal.

From the foregoing description, taken in connection with the accompanying drawings, the construction, operation, and advantages of my invention will be readily understood without requiringan extended explanation. The device is exceedingly useful for-the pu-r-' pose for which it-is--designed and may be "placed upon the market ata comparatively small cost.

Various changes 1n the form, proportion,

andthe minor details of construction may be resortedto without departing from the principle or sacrificing any of the advantages of this invention. I

V In the manufacture of picks having but one point a blank corresponding in size and shape to the shank-of another pick-point:

may be employed. It is also evident that the ribs or projections may, if desired, be formed on the shank parts and the recesses or grooves in thewall of the, eye or socket.

Furthermore,it must be understood that my, improved construction isnot limited to picks,

since it 1nay be e nployed to advantage in I 5 only requirement beingthat the, tool shall/j.

fastening otherftools to itheir'ha'ndles, the

have its shank part properly constructed,

tion of the operating or protruding'portion of the tool-or device is immaterial. g 1

what is claimed, and desired to l. .Thecombinatronw1th apick ey e having v a polygonal opening and transverse ribs on the interior end walls of said opening, o f- 1 1, pick-points having shanks polygonal incros s I section adapted to said opening and formed with grooves to engage said; ribs, and a wedge driven into said opening between said shanks and this being the case the'shape orifunc 1 v c, 96, Having thusfullyjdescribedmy inventiomgi be secured and spreading them apart and holding the l shaped locking-key inserted in said opening grooves of the shanks locked to the ribs of between said shanks.

the opening, substantially as set forth. In testimony whereof I have hereunto set 2. The combination of a pick-eye having my hand in presence of two subscribing wit- 5 an opening polygonal in cross-section, picknesses.

points having shanks polygonal in cross-section adapted to enter said opening, the pickpoint shanks and the adjacent wall of the eye Witnesses:

being respectively provided with cooperating JAMES S. GILBERT,

10 looking recesses and projections, andawedge- 1 A. M. LIPSEY.

EDWARD AL. SMITH. 

